Skylarkify redex test build defs.
Skylarkify redex test build defs.

Summary:
Python DSL Buck parser is deprecated and will be
replaced by Skylark.

Reviewed By: philipjameson

Differential Revision: D8465741

fbshipit-source-id: 62e2b65dc572a44b44ff340189114b08e7d9ad0b

facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex